Chopping tree down breaks walls in underground z-levels

[DanteTorn]

Describe the bug

Chopping down a tree breaks walls (and presumably anything else destroyable by falling trees) that are underground.

Steps To Reproduce

Steps to reproduce the behavior:

1. Make sure experimental z-levels are on.
2. Fell tree next to LMOE shelter.
3. "From the northwest and below you hear metal screeching!"
4. Go down stairs to find destroyed metal wall.

Expected behavior

Felling trees above ground shouldn't destroy metal walls below ground.
I would assume the reason why this is working like this is because certain kinds of building destruction go through z-levels, and this is perhaps an unintended consequence of that?

Screenshots

Versions and configuration

• OS: Windows
  • OS Version: MINGW/CYGWIN/MSYS2 on unknown Windows version
• Game Version: 0.D-7542-ga5d33f6 [64-bit]
• Graphics Version: Tiles
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food],
  Aftershock [aftershock],
  Magiclysm [magiclysm],
  Craftable Gun Pack [craftgp],
  Garden Pots [growable-pots],
  Icecoon's Arsenal [ew_pack],
  Makeshift Items Mod [makeshift],
  More Survival Tools [More_Survival_Tools],
  DinoMod [DinoMod],
  Modular Turrets [modular_turrets],
  Salvaged Robots [Salvaged_Robots],
  Hydroponics [hydroponics],
  Mutant NPCs [mutant_npcs],
  More Locations [more_locations],
  Fuji's More Buildings [FujiStruct],
  Urban Development [Urban_Development],
  Folding Parts pack [deoxymod],
  Vehicle Additions Pack [blazemod],
  Tanks and Other Vehicles [Tanks],
  [DP_MOD] Indicators: REMIX [DP_REMIX_INDICATORS],
  sees-player icon, -attitude [sees_player_less_attitude],
  No Fungal Monsters [No_Fungi],
  No Gasoline Boomers [No_Gasoline_Boomers-DANTE],
  Safe Autodoc [safeautodoc],
  Simplified Nutrition [novitamins],
  Stats Through Kills [stats_through_kills],
  Hair aka Rainbow [Hairs]
  ]

Additional context

save.zip

Note: Ignore the bio-operator in the cage, he's z-slaved. The shocker is not though, but I lured him down into the room below, so just don't open that particular door.

[ZhilkinSerg]

Duplicate of #14117